Lrl from Italy

[sweker]

MR FRANCO CAN YOU please put full pdf descriptions of 20 mhz version

[FrancoItaly]

Remember that I have created 3 20Mh lrls and only the first one works well, therefore I cannot provide assistance because I did not understand what the problem was with the 2 non-functioning lrls. However it is important to make a pcb only for the sensor stage.

[sweker]

Originally Posted by FrancoItaly

Remember that I have created 3 20Mh lrls and only the first one works well, therefore I cannot provide assistance because I did not understand what the problem was with the 2 non-functioning lrls. However it is important to make a pcb only for the sensor stage.

MR Franco I have three questions thankfully
1. can I use stable power supply 12v instead your18 v power stage?
2. does the display stage work probably with stable power supply 12v ?
3. what Is the value of P 2 in the new display stage ..is it 1 M ?
thank you so much

[FrancoItaly]

All my lrl runs on stabilized 12V and since the stabilizer IC requires at least 15V (12V + 3V) to work properly I used two 9V batteries. Any other system that supplies stabilized 12V is fine.
Potentiometer P2 is 1M.

[sweker]

Originally Posted by FrancoItaly

All my lrl runs on stabilized 12V and since the stabilizer IC requires at least 15V (12V + 3V) to work properly I used two 9V batteries. Any other system that supplies stabilized 12V is fine.
Potentiometer P2 is 1M.

Hello again MR FRANCO ,Did you use two separate pcb for sensor stage of 20 Mz as you mention in the help paper (the 20Mz oscillator has 2 transistors and various additional components, therefore it will have to be made on a separate pcb )

[FrancoItaly]

There isn't an extra transistor, if you only have one pcb for everything you can try it like this, it might even work, I have no experience on this, I always used two pcb.

[sweker]

Originally Posted by FrancoItaly

There isn't an extra transistor, if you only have one pcb for everything you can try it like this, it might even work, I have no experience on this, I always used two pcb.

20 Mhz components - helps (2).txt
MR Franco Honestly I did not understand the steps of adjusting the device to prevent self oscillation , could you please write it in steps or give me voice instruction step by step

[FrancoItaly]

I'm sorry, but I warned on the forum that I couldn't help to build the 20Mhz lrl, because only the first lrl works, but the following two don't, probably the project is too critical. Also my English is written only.

[sweker]

Originally Posted by FrancoItaly

I'm sorry, but I warned on the forum that I couldn't help to build the 20Mhz lrl, because only the first lrl works, but the following two don't, probably the project is too critical. Also my English is written only.

MR FRANCO at the testing stage as you said do not connect the quartz then test the voltage at the out , which out do you mean to be measured?

[FrancoItaly]

I briefly summarize the operation, the sensor stage amplifies the oscillator signal which must be very small otherwise the sensor stage is saturated, in the mixer TR2 the mixing of the oscillator signal and the "phenomenon" takes place. Removing the crystal, therefore without oscillation, the output must be 0, if there is a DC signal it means that the whole sensor stage auto oscillates, an undesirable condition because putting the crystal would have a low sensitivity. Then decrease the amplification until the output is zero, this can be done by decreasing C13/C/14.

[sweker]

Originally Posted by FrancoItaly

I briefly summarize the operation, the sensor stage amplifies the oscillator signal which must be very small otherwise the sensor stage is saturated, in the mixer TR2 the mixing of the oscillator signal and the "phenomenon" takes place. Removing the crystal, therefore without oscillation, the output must be 0, if there is a DC signal it means that the whole sensor stage auto oscillates, an undesirable condition because putting the crystal would have a low sensitivity. Then decrease the amplification until the output is zero, this can be done by decreasing C13/C/14.

MR Franco can I add antenna amplifier on the same pcb sensor stage ?

[FrancoItaly]

Yes.

[FrancoItaly]

Although in several years this thread has surpassed 1,000,000 views, a huge number considering this is a very specialized topic. I want to thank everyone who actively participated in this thread and also privately. I think my lrl was the only one for which all the data and assistance to build it were given, I was told that in some countries the kit is sold and I don't mind it, on the contrary it is further proof of the goodness of the project, furthermore not everyone is able to make the PCBs and the calibrations.

[sweker]

Originally Posted by FrancoItaly

Although in several years this thread has surpassed 1,000,000 views, a huge number considering this is a very specialized topic. I want to thank everyone who actively participated in this thread and also privately. I think my lrl was the only one for which all the data and assistance to build it were given, I was told that in some countries the kit is sold and I don't mind it, on the contrary it is further proof of the goodness of the project, furthermore not everyone is able to make the PCBs and the calibrations.

I also thank God very much, and then thank you because you were so generous and did not skimp on us with any information and did not spare any effort to help us , thank you Mr franco

[FrancoItaly]

Thank you for your compliments.

[Pahom]

Originally Posted by FrancoItaly

Yes.

Adjust according to Franco's recommendation. Be sure to top layer copper to avoid vibrations.

[sweker]

Originally Posted by Pahom

Adjust according to Franco's recommendation. Be sure to top layer copper to avoid vibrations.

thank you so much bro , but it does not open with spring layout 6

[Pahom]

Originally Posted by sweker

thank you so much bro , but it does not open with spring layout 6

You are the first who complained. I downloaded it myself and everything opens. Do you have the sixth version of the program?

[sweker]

Originally Posted by Pahom

You are the first who complained. I downloaded it myself and everything opens. Do you have the sixth version of the program?

[Pahom]

Originally Posted by sweker

Attachment 20962

Demo version, this is a limited version, which is probably why it does not open the file. Install the normal version.

[folharin]

this device does not work.I tested all versions..but here in Brazil, it's useless!!!

[sweker]

Originally Posted by folharin

this device does not work.I tested all versions..but here in Brazil, it's useless!!!

in which way do you mean by it does not work,it does not work at all or it does not catch the phenomena?

[folharin]

Originally Posted by sweker

in which way do you mean by it does not work,it does not work at all or it does not catch the phenomena?

it works in other countries.. here in Brazil it doesn't get results! but I heard opinions that in several countries it proved to be efficient

[Babak Ruby]

Many thanks to the hardworking managers and Franco. Is the effect of the earth's field on metals in the plains and mountains the same, and does this system react in the same way for these areas?

[FrancoItaly]

Originally Posted by Babak Ruby

Many thanks to the hardworking managers and Franco. Is the effect of the earth's field on metals in the plains and mountains the same, and does this system react in the same way for these areas?

Unfortunately I cannot give an answer, having little experience on different types of terrain, but since the phenomenon certainly also depends on the earth's magnetic field, I believe that there is little difference between mountains and plains. Instead, near the equator, where the north and south poles are at the same distance there could be an attenuation or perhaps disappearance of the phenomenon.